坚硬顶板综放工作面来压特征分析研究

摘要

Based on the geological conditions and mining conditions of No.8935 fully mechanized top coal caving mining face, the roof pressure and pressure characteristics of fully mechanized top-coal caving face under hard roof conditions are systematically studied by means of theoretical analysis and field measurement.The results show that the first pressure step of the 8935 working face is 77.21 m, the cycle pressure step is 17.6~21.1 m, the dynamic pressure coefficient is 1.31.The study of the pressure characteristics and its achievement have valuable meaning for reference in coalmines with similar working conditions.%基于8935综放工作面的地质条件和开采情况,综合采用理论分析、现场实测等方法,系统研究了坚硬顶板条件下综放工作面的顶板来压以及来压显现特征.研究结果表明:8935工作面基本顶初次来压步距为77.21 m,周期来压步距为 17.6~21.1 m,周期来压时动压系数为1.31.该研究方法及结果对类似条件下工作面来压特征的研究具有一定的参考价值.